Author Topic: Wider track width on the front of a '70 'Cuda ????????  (Read 5017 times)

Offline brads70

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Re: Wider track width on the front of a '70 'Cuda ????????
« Reply #15 on: January 27, 2015 - 11:14:45 AM »
Not sure, it depends where are steering arms are at. Yes you could physically get it to bolt up , but what it does geometry wise I don't know if it would be optimal ?  With a mill and a welder anything is possible...
« Last Edit: January 27, 2015 - 11:21:08 AM by brads70 »
Brad
1970 Challenger 451stroker/4L60 auto OD
Barrie,Ontario,Canada
Proud to own one of the best cars ever made!!!!!

My restoration thread 
http://www.cuda-challenger.com/cc/index.php?topic=59072.0
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http://www.cuda-challenger.com/cc/index.php?topic=73985.0




Offline HP2

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Re: Wider track width on the front of a '70 'Cuda ????????
« Reply #16 on: January 27, 2015 - 03:46:46 PM »
Taking front steer spindles and flipping them around to rear steer will introduce anti-ackerman. The same thing happens when you swap the stock rear steer ball joints side to side and rotate forward for a front steer arrangement

Ackerman is the geometry where the inside tire turns sharper then the outside tire for a given amount of steering wheel input. It prevents tire scrub and aids in directional stability. Some race cars run no ackerman. Anti-ackerman would be the opposite effect where the inside tire will turn less than the outside tire. It will produce excessive amounts of scrub on the outside tire and probably make it feel kind squirrelly without adding an equal amount of toe out, which may then make the steering feel darty.

Offline 3D

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Re: Wider track width on the front of a '70 'Cuda ????????
« Reply #17 on: January 31, 2015 - 07:51:56 PM »
Taking front steer spindles and flipping them around to rear steer will introduce anti-ackerman. The same thing happens when you swap the stock rear steer ball joints side to side and rotate forward for a front steer arrangement

Ackerman is the geometry where the inside tire turns sharper then the outside tire for a given amount of steering wheel input. It prevents tire scrub and aids in directional stability. Some race cars run no ackerman. Anti-ackerman would be the opposite effect where the inside tire will turn less than the outside tire. It will produce excessive amounts of scrub on the outside tire and probably make it feel kind squirrelly without adding an equal amount of toe out, which may then make the steering feel darty.

Thanks, Thats the kinds stuff i was wondering. found a two wheel drive Dakota at the wrecker today.
I'll be going back next week to grab the spindles/Rotors. i just wanna see if its possible, maybe i'll run rack/pinion steering???

Offline HP2

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Re: Wider track width on the front of a '70 'Cuda ????????
« Reply #18 on: January 31, 2015 - 11:17:22 PM »
Box or rack, front or rear, you need to neuteralize the ackerman or return  it to stock so the car feels stable.

To see how ackerman lays up in the steering system, you need to imagine looking down on the car from above, and drawing two lines angled from the pinion yoke though each lower ball joint and projecting forward.

For a rear steering system, the tie rod ends will need to have a narrower track than the ball joints to fall on the line drawn above.

For a front steering system, the tie rod ends will need to have a wider track width than the ball joints to also fall on the same line as above.

To have neuteral ackerman, the tie rod ends must be  exactly the same track width as the  ball joints and project a line straight back, not intersecting the  pinion.